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TupleBase (Oracle - Berkeley DB Java API)
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com.sleepycat.bind.tuple</FONT>
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Class TupleBase</H2>
<PRE>
<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html" title="class or interface in java.lang">java.lang.Object</A>
  <IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><B>com.sleepycat.bind.tuple.TupleBase</B>
</PRE>
<DL>
<DT><B>Direct Known Subclasses:</B> <DD><A HREF="../../../../com/sleepycat/bind/tuple/TupleBinding.html" title="class in com.sleepycat.bind.tuple">TupleBinding</A>, <A HREF="../../../../com/sleepycat/bind/serial/TupleSerialBinding.html" title="class in com.sleepycat.bind.serial">TupleSerialBinding</A>, <A HREF="../../../../com/sleepycat/bind/serial/TupleSerialKeyCreator.html" title="class in com.sleepycat.bind.serial">TupleSerialKeyCreator</A>, <A HREF="../../../../com/sleepycat/bind/tuple/TupleTupleBinding.html" title="class in com.sleepycat.bind.tuple">TupleTupleBinding</A>, <A HREF="../../../../com/sleepycat/bind/tuple/TupleTupleKeyCreator.html" title="class in com.sleepycat.bind.tuple">TupleTupleKeyCreator</A></DD>
</DL>
<HR>
<DL>
<DT><PRE>public class <B>TupleBase</B><DT>extends <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A></DL>
</PRE>

<P>
A base class for tuple bindings and tuple key creators that provides control
 over the allocation of the output buffer.

 <p>Tuple bindings and key creators append data to a <A HREF="../../../../com/sleepycat/bind/tuple/TupleOutput.html" title="class in com.sleepycat.bind.tuple"><CODE>TupleOutput</CODE></A>
 instance, which is also a <A HREF="../../../../com/sleepycat/util/FastOutputStream.html" title="class in com.sleepycat.util"><CODE>FastOutputStream</CODE></A>
 instance.  This object has a byte array buffer that is resized when it is
 full.  The reallocation of this buffer can be a performance factor for
 some applications using large objects.  To manage this issue, the <A HREF="../../../../com/sleepycat/bind/tuple/TupleBase.html#setTupleBufferSize(int)"><CODE>setTupleBufferSize(int)</CODE></A> method may be used to control the initial size of the
 buffer, and the <A HREF="../../../../com/sleepycat/bind/tuple/TupleBase.html#getTupleOutput(java.lang.Object)"><CODE>getTupleOutput(java.lang.Object)</CODE></A> method may be overridden by
 subclasses to take over creation of the TupleOutput object.</p>
<P>

<P>
<HR>

<P>

<!-- ======== CONSTRUCTOR SUMMARY ======== -->

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<TD><CODE><B><A HREF="../../../../com/sleepycat/bind/tuple/TupleBase.html#TupleBase()">TupleBase</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Initializes the initial output buffer size to zero.</TD>
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<!-- ========== METHOD SUMMARY =========== -->

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<B>Method Summary</B></FONT></TH>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static&nbsp;<A HREF="../../../../com/sleepycat/bind/tuple/TupleInput.html" title="class in com.sleepycat.bind.tuple">TupleInput</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/sleepycat/bind/tuple/TupleBase.html#entryToInput(com.sleepycat.db.DatabaseEntry)">entryToInput</A></B>(<A HREF="../../../../com/sleepycat/db/DatabaseEntry.html" title="class in com.sleepycat.db">DatabaseEntry</A>&nbsp;entry)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Utility method to create a new tuple input object for reading the data
 from a given buffer.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/sleepycat/bind/tuple/TupleBase.html#getTupleBufferSize()">getTupleBufferSize</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the initial byte size of the output buffer.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>protected &nbsp;<A HREF="../../../../com/sleepycat/bind/tuple/TupleOutput.html" title="class in com.sleepycat.bind.tuple">TupleOutput</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/sleepycat/bind/tuple/TupleBase.html#getTupleOutput(java.lang.Object)">getTupleOutput</A></B>(<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A>&nbsp;object)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns an empty TupleOutput instance that will be used by the tuple
 binding or key creator.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/sleepycat/bind/tuple/TupleBase.html#inputToEntry(com.sleepycat.bind.tuple.TupleInput, com.sleepycat.db.DatabaseEntry)">inputToEntry</A></B>(<A HREF="../../../../com/sleepycat/bind/tuple/TupleInput.html" title="class in com.sleepycat.bind.tuple">TupleInput</A>&nbsp;input,
             <A HREF="../../../../com/sleepycat/db/DatabaseEntry.html" title="class in com.sleepycat.db">DatabaseEntry</A>&nbsp;entry)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Utility method to set the data in a entry buffer to the data in a tuple
 input object.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static&nbsp;<A HREF="../../../../com/sleepycat/bind/tuple/TupleOutput.html" title="class in com.sleepycat.bind.tuple">TupleOutput</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/sleepycat/bind/tuple/TupleBase.html#newOutput()">newOutput</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Deprecated.</B>&nbsp;<I>replaced by <A HREF="../../../../com/sleepycat/bind/tuple/TupleBase.html#getTupleOutput(java.lang.Object)"><CODE>getTupleOutput(java.lang.Object)</CODE></A></I></TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static&nbsp;<A HREF="../../../../com/sleepycat/bind/tuple/TupleOutput.html" title="class in com.sleepycat.bind.tuple">TupleOutput</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/sleepycat/bind/tuple/TupleBase.html#newOutput(byte[])">newOutput</A></B>(byte[]&nbsp;buffer)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Deprecated.</B>&nbsp;<I>replaced by <A HREF="../../../../com/sleepycat/bind/tuple/TupleBase.html#getTupleOutput(java.lang.Object)"><CODE>getTupleOutput(java.lang.Object)</CODE></A></I></TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/sleepycat/bind/tuple/TupleBase.html#outputToEntry(com.sleepycat.bind.tuple.TupleOutput, com.sleepycat.db.DatabaseEntry)">outputToEntry</A></B>(<A HREF="../../../../com/sleepycat/bind/tuple/TupleOutput.html" title="class in com.sleepycat.bind.tuple">TupleOutput</A>&nbsp;output,
              <A HREF="../../../../com/sleepycat/db/DatabaseEntry.html" title="class in com.sleepycat.db">DatabaseEntry</A>&nbsp;entry)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Utility method to set the data in a entry buffer to the data in a tuple
 output object.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/sleepycat/bind/tuple/TupleBase.html#setTupleBufferSize(int)">setTupleBufferSize</A></B>(int&nbsp;byteSize)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Sets the initial byte size of the output buffer that is allocated by the
 default implementation of <A HREF="../../../../com/sleepycat/bind/tuple/TupleBase.html#getTupleOutput(java.lang.Object)"><CODE>getTupleOutput(java.lang.Object)</CODE></A>.</TD>
</TR>
</TABLE>
&nbsp;<A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TH ALIGN="left"><B>Methods inherited from class java.lang.<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A></B></TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#clone()" title="class or interface in java.lang">clone</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#equals(java.lang.Object)" title="class or interface in java.lang">equals</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#finalize()" title="class or interface in java.lang">finalize</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#getClass()" title="class or interface in java.lang">getClass</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#hashCode()" title="class or interface in java.lang">hashCode</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#notify()" title="class or interface in java.lang">notify</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#notifyAll()" title="class or interface in java.lang">notifyAll</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#toString()" title="class or interface in java.lang">toString</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#wait()" title="class or interface in java.lang">wait</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#wait(long)" title="class or interface in java.lang">wait</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#wait(long, int)" title="class or interface in java.lang">wait</A></CODE></TD>
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<!-- ========= CONSTRUCTOR DETAIL ======== -->

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<A NAME="TupleBase()"><!-- --></A><H3>
TupleBase</H3>
<PRE>
public <B>TupleBase</B>()</PRE>
<DL>
<DD>Initializes the initial output buffer size to zero.

 <p>Unless <A HREF="../../../../com/sleepycat/bind/tuple/TupleBase.html#setTupleBufferSize(int)"><CODE>setTupleBufferSize(int)</CODE></A> is called, the default <A HREF="../../../../com/sleepycat/util/FastOutputStream.html#DEFAULT_INIT_SIZE"><CODE>FastOutputStream.DEFAULT_INIT_SIZE</CODE></A> size will be
 used.</p>
<P>
</DL>

<!-- ============ METHOD DETAIL ========== -->

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<B>Method Detail</B></FONT></TH>
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<A NAME="setTupleBufferSize(int)"><!-- --></A><H3>
setTupleBufferSize</H3>
<PRE>
public void <B>setTupleBufferSize</B>(int&nbsp;byteSize)</PRE>
<DL>
<DD>Sets the initial byte size of the output buffer that is allocated by the
 default implementation of <A HREF="../../../../com/sleepycat/bind/tuple/TupleBase.html#getTupleOutput(java.lang.Object)"><CODE>getTupleOutput(java.lang.Object)</CODE></A>.

 <p>If this property is zero (the default), the default <A HREF="../../../../com/sleepycat/util/FastOutputStream.html#DEFAULT_INIT_SIZE"><CODE>FastOutputStream.DEFAULT_INIT_SIZE</CODE></A> size is used.</p>
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>byteSize</CODE> - the initial byte size of the output buffer, or zero to
 use the default size.</DL>
</DD>
</DL>
<HR>

<A NAME="getTupleBufferSize()"><!-- --></A><H3>
getTupleBufferSize</H3>
<PRE>
public int <B>getTupleBufferSize</B>()</PRE>
<DL>
<DD>Returns the initial byte size of the output buffer.
<P>
<DD><DL>

<DT><B>Returns:</B><DD>the initial byte size of the output buffer.<DT><B>See Also:</B><DD><A HREF="../../../../com/sleepycat/bind/tuple/TupleBase.html#setTupleBufferSize(int)"><CODE>setTupleBufferSize(int)</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="getTupleOutput(java.lang.Object)"><!-- --></A><H3>
getTupleOutput</H3>
<PRE>
protected <A HREF="../../../../com/sleepycat/bind/tuple/TupleOutput.html" title="class in com.sleepycat.bind.tuple">TupleOutput</A> <B>getTupleOutput</B>(<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A>&nbsp;object)</PRE>
<DL>
<DD>Returns an empty TupleOutput instance that will be used by the tuple
 binding or key creator.

 <p>The default implementation of this method creates a new TupleOutput
 with an initial buffer size that can be changed using the <A HREF="../../../../com/sleepycat/bind/tuple/TupleBase.html#setTupleBufferSize(int)"><CODE>setTupleBufferSize(int)</CODE></A> method.</p>

 <p>This method may be overridden to return a TupleOutput instance.  For
 example, an instance per thread could be created and returned by this
 method.  If a TupleOutput instance is reused, be sure to call its
 <A HREF="../../../../com/sleepycat/util/FastOutputStream.html#reset()"><CODE>FastOutputStream.reset()</CODE></A> method before each
 use.</p>
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>object</CODE> - is the object to be written to the tuple output, and may
 be used by subclasses to determine the size of the output buffer.
<DT><B>Returns:</B><DD>an empty TupleOutput instance.<DT><B>See Also:</B><DD><A HREF="../../../../com/sleepycat/bind/tuple/TupleBase.html#setTupleBufferSize(int)"><CODE>setTupleBufferSize(int)</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="outputToEntry(com.sleepycat.bind.tuple.TupleOutput, com.sleepycat.db.DatabaseEntry)"><!-- --></A><H3>
outputToEntry</H3>
<PRE>
public static void <B>outputToEntry</B>(<A HREF="../../../../com/sleepycat/bind/tuple/TupleOutput.html" title="class in com.sleepycat.bind.tuple">TupleOutput</A>&nbsp;output,
                                 <A HREF="../../../../com/sleepycat/db/DatabaseEntry.html" title="class in com.sleepycat.db">DatabaseEntry</A>&nbsp;entry)</PRE>
<DL>
<DD>Utility method to set the data in a entry buffer to the data in a tuple
 output object.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>output</CODE> - is the source tuple output object.<DD><CODE>entry</CODE> - is the destination entry buffer.</DL>
</DD>
</DL>
<HR>

<A NAME="inputToEntry(com.sleepycat.bind.tuple.TupleInput, com.sleepycat.db.DatabaseEntry)"><!-- --></A><H3>
inputToEntry</H3>
<PRE>
public static void <B>inputToEntry</B>(<A HREF="../../../../com/sleepycat/bind/tuple/TupleInput.html" title="class in com.sleepycat.bind.tuple">TupleInput</A>&nbsp;input,
                                <A HREF="../../../../com/sleepycat/db/DatabaseEntry.html" title="class in com.sleepycat.db">DatabaseEntry</A>&nbsp;entry)</PRE>
<DL>
<DD>Utility method to set the data in a entry buffer to the data in a tuple
 input object.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>input</CODE> - is the source tuple input object.<DD><CODE>entry</CODE> - is the destination entry buffer.</DL>
</DD>
</DL>
<HR>

<A NAME="entryToInput(com.sleepycat.db.DatabaseEntry)"><!-- --></A><H3>
entryToInput</H3>
<PRE>
public static <A HREF="../../../../com/sleepycat/bind/tuple/TupleInput.html" title="class in com.sleepycat.bind.tuple">TupleInput</A> <B>entryToInput</B>(<A HREF="../../../../com/sleepycat/db/DatabaseEntry.html" title="class in com.sleepycat.db">DatabaseEntry</A>&nbsp;entry)</PRE>
<DL>
<DD>Utility method to create a new tuple input object for reading the data
 from a given buffer.  If an existing input is reused, it is reset before
 returning it.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>entry</CODE> - is the source entry buffer.
<DT><B>Returns:</B><DD>the new tuple input object.</DL>
</DD>
</DL>
<HR>

<A NAME="newOutput()"><!-- --></A><H3>
newOutput</H3>
<PRE>
public static <A HREF="../../../../com/sleepycat/bind/tuple/TupleOutput.html" title="class in com.sleepycat.bind.tuple">TupleOutput</A> <B>newOutput</B>()</PRE>
<DL>
<DD><B>Deprecated.</B>&nbsp;<I>replaced by <A HREF="../../../../com/sleepycat/bind/tuple/TupleBase.html#getTupleOutput(java.lang.Object)"><CODE>getTupleOutput(java.lang.Object)</CODE></A></I>
<P>
<DD>Utility method for use by bindings to create a tuple output object.
<P>
<DD><DL>

<DT><B>Returns:</B><DD>a new tuple output object.</DL>
</DD>
</DL>
<HR>

<A NAME="newOutput(byte[])"><!-- --></A><H3>
newOutput</H3>
<PRE>
public static <A HREF="../../../../com/sleepycat/bind/tuple/TupleOutput.html" title="class in com.sleepycat.bind.tuple">TupleOutput</A> <B>newOutput</B>(byte[]&nbsp;buffer)</PRE>
<DL>
<DD><B>Deprecated.</B>&nbsp;<I>replaced by <A HREF="../../../../com/sleepycat/bind/tuple/TupleBase.html#getTupleOutput(java.lang.Object)"><CODE>getTupleOutput(java.lang.Object)</CODE></A></I>
<P>
<DD>Utility method for use by bindings to create a tuple output object
 with a specific starting size.
<P>
<DD><DL>

<DT><B>Returns:</B><DD>a new tuple output object.</DL>
</DD>
</DL>
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